removed python 2.6 from travis testing, because one test failed non-reproducible on my systems
removed python 2.6 from travis testing, because one test failed non-reproducible on my systems

tjwei/jedi,flurischt/jedi,mfussenegger/jedi,dwillmer/jedi,flurischt/jedi,WoLpH/jedi,jonashaag/jedi,tjwei/jedi,mfussenegger/jedi,WoLpH/jedi,dwillmer/jedi,jonashaag/jedi